Product DescriptionThe Fortis Camber AR-15 Rail System is built around the Camber Lock mounting system for a rigid, rock-solid handguard platform with simplified installation and serviceability. Constructed from aircraft-grade 6061-T6 aluminum with a Type III hard-coat anodized black finish, it features a continuous top rail and extensive M-LOK compatibility for lights, switches, and accessories. The stainless steel barrel nut and locking Camber nuts are designed for strength while helping keep overall weight down. Installation requires a high-quality castle nut wrench (not included) and the included T30 Torx L-key to lock the rail in place.Product Highlights Camber Lock mounting system designed for exceptional rigidity and a secure AR-15 handguard fit Aircraft-grade 6061-T6 aluminum construction with Type III hard-coat anodized black finish Continuous top rail for optics and accessories, plus M-LOK slots for modular mounting Extended M-LOK coverage at 3, 6, and 9 o'clock with additional offset positions for light/switch placement Stainless steel barrel nut; easy install/removal for maintenance (castle nut wrench compatible; wrench not included)Specs Brand Name: Fortis Manufacturing, Inc. Model: Camber Rail / Camber AR-15 Rail System Type: AR-15 Handguard / Rail System Interface: M-LOK Color: Black Length: 11.8 in Handguard Weight: 8.36 oz Barrel Nut Weight: 2.9 oz Internal Diameter: 1.34 in Top Rail: Continuous Material: Aircraft Grade 6061-T6 Aluminum Finish: Type III Hard-coat Anodized Barrel Nut: Stainless Steel (castle nut wrench compatible) Included Tool: T30 Torx L-Key Country of Manufacture: Made in the USA UPC: 810103340602 Manufacturer Part Number: 556-CAM-118-MLDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.